I fish the edges of the weeds like any other cover, sometimes perpendicular, sometimes parallel. When I fish close like that I use a 4x tippet if I'm dragging meat to horse the fish back before they get in the weeds.

When I do a dry/emerger or chironomid/pupa rig I go 5x and get them on the reel, up and away from the weeds as speedy as i can. Same with tossing damsel"s, terrestrial or other dry's into the holes.

The fish are there it's really a matter of getting them to the net after they take.